Conditional rule &1 has status "unchecked"

What causes this issue?

Conditional rule &V1& has status "unchecked".

System Response

The rule is checked every time it is executed. This results in a loss of
performance at runtime.

How to fix this error?

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Procedure for System Administrators

Check the rule in Customizing of the conditional rule with function
"Check" and set the correct status.

Error message extract from SAP system. Copyright SAP SE.